What can save meat with freezer burn?

I have some beef that I left in my freezer far too long. It has freezer burn on the upper layer, and I don’t know what to do with it. Should I try to trim off the upper layer? Should I cook it slowly in the crock pot? Should I throw it away?

By the way, I also have a package of chicken breasts that are also old. I’ll be thawing those next and will need the same advice, assuming they also have some freezer burn.

I’ve learned my lesson: eat what you buy sooner rather than later.